Advertisements
Advertisements
Question
How did the name 'hydrogen' originate?
Advertisements
Solution
The name 'hydrogen' originated on account of its ability to form water.
APPEARS IN
RELATED QUESTIONS
Give reason for the following:
Though hydrogen is lighter than air it cannot be collected by downward displacement of air.
FILL IN THE BLANK
In electrolysis of water, dilute sulphuric acid is added to increase ..................of water.
Which test should be made before collecting hydrogen in a gas jar?
Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:
A monovalent metal
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Select the correct options for the following statement:
The acid _____ is not Used in the laboratory preparation of hydrogen, using zinc and an acid.
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Aluminium - 2Al + 2NaOH + 2H2O → ______ + _______ [g]
2Al + 2KOH + 2H2O → _____ + _____ [g]
Name an element whsich reacts violently with water at room temperature.
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{NaAlO2 + H2}\]
